com.ibm.crypto.hdwrCCA.provider

Class CrtToken

java.lang.Object

com.ibm.crypto.hdwrCCA.provider.CrtToken

public class CrtToken
extends java.lang.Object

This class maps an external RSA Private Key Token containing a Token Header, a RSA Private Key Section, and a RSA Public Key Section. Refer to the section on RSA Key Token Formats in the Cryptographic Services ICSF System Programmer's Guide for more information on formatting of the token.

Constructor Summary

Constructors

Constructor and Description
CrtToken(byte[] externalToken, byte[] internalToken) Constructor.

Method Summary

Modifier and Type	Method and Description
java.security.PrivateKey	generatePrivateCrtkey() Generates and returns a JCE private key object that is constructed from this token's field values.
byte	getKeyFormatSecurityFromToken() Returns the "Key format and security" field value, in the RSA private key section of this RSA external token.
java.math.BigInteger	getPublicExponentFromToken() Returns the public key exponent, e, in the RSA public key section of this RSA external token.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CrtToken

public CrtToken(byte[] externalToken,
                byte[] internalToken)

Constructor. Parse all fields of the RSA Private External Key Token.

Parameters:

externalToken - the RSA private external key token to parse

internalToken - the internal token, not parsed and not required or supported

Method Detail

getKeyFormatSecurityFromToken

public byte getKeyFormatSecurityFromToken()

Returns the "Key format and security" field value, in the RSA private key section of this RSA external token. Field offset within section is 28. 1 byte long.

Returns:

the "Key format and security" field value.

getPublicExponentFromToken

public java.math.BigInteger getPublicExponentFromToken()

Returns the public key exponent, e, in the RSA public key section of this RSA external token.

Returns:

the public key exponent, e.

generatePrivateCrtkey

public java.security.PrivateKey generatePrivateCrtkey()
                                               throws java.lang.Exception

Generates and returns a JCE private key object that is constructed from this token's field values.

Returns:

the generated JCE RSAPrivateCrtKey object, or null if the private key is encrypted.

Throws:

java.io.IOException - if this is not a RSA Private External Key Token

java.security.ProviderException - if unable to construct a RSA key from this RSA external token

java.lang.Exception